Update copyright dates with scripts/update-copyrights

I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master

13 files changed, 13 insertions, 13 deletions

diff --git a/sysdeps/ieee754/float128/float1282mpn.c b/sysdeps/ieee754/float128/float1282mpn.c
index 50a3578..7e95b79 100644
--- a/sysdeps/ieee754/float128/float1282mpn.c
+++ b/sysdeps/ieee754/float128/float1282mpn.c
@@ -1,5 +1,5 @@
 /* Convert a _Float128 type to multiprecision.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/float128_private.h b/sysdeps/ieee754/float128/float128_private.h
index ab6fc9f..9791388 100644
--- a/sysdeps/ieee754/float128/float128_private.h
+++ b/sysdeps/ieee754/float128/float128_private.h
@@ -1,5 +1,5 @@
 /* _Float128 overrides for building ldbl-128 as _Float128.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/ieee754_float128.h b/sysdeps/ieee754/float128/ieee754_float128.h
index 5e94eb6..be4764e 100644
--- a/sysdeps/ieee754/float128/ieee754_float128.h
+++ b/sysdeps/ieee754/float128/ieee754_float128.h
@@ -1,5 +1,5 @@
 /* _Float128 IEEE like macros.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/math-nan-payload-float128.h b/sysdeps/ieee754/float128/math-nan-payload-float128.h
index ff098ee..2baad19 100644
--- a/sysdeps/ieee754/float128/math-nan-payload-float128.h
+++ b/sysdeps/ieee754/float128/math-nan-payload-float128.h
@@ -1,5 +1,5 @@
 /* NaN payload handling for _Float128.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/mpn2float128.c b/sysdeps/ieee754/float128/mpn2float128.c
index befe78f..b4cbf8e 100644
--- a/sysdeps/ieee754/float128/mpn2float128.c
+++ b/sysdeps/ieee754/float128/mpn2float128.c
@@ -1,5 +1,5 @@
 /* Convert a number in multi-precision format to _Float128.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/s_signbitf128.c b/sysdeps/ieee754/float128/s_signbitf128.c
index c2a1097..4f866e0 100644
--- a/sysdeps/ieee754/float128/s_signbitf128.c
+++ b/sysdeps/ieee754/float128/s_signbitf128.c
@@ -1,5 +1,5 @@
 /* Return nonzero value if number is negative.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/strfromf128.c b/sysdeps/ieee754/float128/strfromf128.c
index 5ab84f5..44d1541 100644
--- a/sysdeps/ieee754/float128/strfromf128.c
+++ b/sysdeps/ieee754/float128/strfromf128.c
@@ -1,6 +1,6 @@
 /* Definitions for strfromf128.  Implementation in stdlib/strfrom-skeleton.c.
 
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/ieee754/float128/strtof128.c b/sysdeps/ieee754/float128/strtof128.c
index f6089b6..58215cb 100644
--- a/sysdeps/ieee754/float128/strtof128.c
+++ b/sysdeps/ieee754/float128/strtof128.c
@@ -1,5 +1,5 @@
 /* strtof128 wrapper of strtof128_l.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/strtof128_l.c b/sysdeps/ieee754/float128/strtof128_l.c
index 7d17a8c..08e3bbc 100644
--- a/sysdeps/ieee754/float128/strtof128_l.c
+++ b/sysdeps/ieee754/float128/strtof128_l.c
@@ -1,5 +1,5 @@
 /* Convert string representing a number to a _Float128 value, with locale.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/strtof128_nan.c b/sysdeps/ieee754/float128/strtof128_nan.c
index c148fb8..ee1356f 100644
--- a/sysdeps/ieee754/float128/strtof128_nan.c
+++ b/sysdeps/ieee754/float128/strtof128_nan.c
@@ -1,6 +1,6 @@
 /* Convert string for NaN payload to corresponding NaN.  Narrow
    strings, __float128.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/wcstof128.c b/sysdeps/ieee754/float128/wcstof128.c
index 582272e..d02686b 100644
--- a/sysdeps/ieee754/float128/wcstof128.c
+++ b/sysdeps/ieee754/float128/wcstof128.c
@@ -1,5 +1,5 @@
 /* wcstof128 wrapper of wcstof128_l.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/wcstof128_l.c b/sysdeps/ieee754/float128/wcstof128_l.c
index c60182e..e39d6e3 100644
--- a/sysdeps/ieee754/float128/wcstof128_l.c
+++ b/sysdeps/ieee754/float128/wcstof128_l.c
@@ -1,5 +1,5 @@
 /* Convert string representing a number to integer value, using given locale.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/ieee754/float128/wcstof128_nan.c b/sysdeps/ieee754/float128/wcstof128_nan.c
index 7d38a18..9ebab18 100644
--- a/sysdeps/ieee754/float128/wcstof128_nan.c
+++ b/sysdeps/ieee754/float128/wcstof128_nan.c
@@ -1,6 +1,6 @@
 /* Convert string for NaN payload to corresponding NaN.  Wide strings,
    _Float128.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or